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Remove the experimental AliasAnalysis::getDependency interface, which

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isn't a good level of abstraction for memdep. Instead, generalize
AliasAnalysis::alias and related interfaces with a new Location
class for describing a memory location. For now, this is the same
Pointer and Size as before, plus an additional field for a TBAA tag.

Also, introduce a fixed MD_tbaa metadata tag kind.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-09-14 21:25:10 +00:00
parent fe3ac088ee
commit b2143b6247
13 changed files with 258 additions and 512 deletions
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9
lib/VMCore/LLVMContext.cpp
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@@ -28,9 +28,16 @@ LLVMContext& llvm::getGlobalContext() {
}
LLVMContext::LLVMContext() : pImpl(new LLVMContextImpl(*this)) {
// Create the first metadata kind, which is always 'dbg'.
// Create the fixed metadata kinds. This is done in the same order as the
// MD_* enum values so that they correspond.
// Create the 'dbg' metadata kind.
unsigned DbgID = getMDKindID("dbg");
assert(DbgID == MD_dbg && "dbg kind id drifted"); (void)DbgID;
// Create the 'tbaa' metadata kind.
unsigned TBAAID = getMDKindID("tbaa");
assert(TBAAID == MD_tbaa && "tbaa kind id drifted"); (void)TBAAID;
}
LLVMContext::~LLVMContext() { delete pImpl; }